For a "budget" setup, I think that setup is a bit overkill. For what Intel offers currently that can handle the game really well - that could be considered a "budget" CPU - that one is quite expensive. Nonetheless, the 4690K has really great performance and should suit you well for some time.

Although with the 570, you'll still get really good performance with FFXIV, but that's mostly because of that CPU. FFXIV isn't that heavy on the GPU, so you shouldn't have to worry about upgrading your video card for some time.